(Delphi DLL) Load PKCS12 / PFX and Access Contents

Loads a PKCS12 / PFX file and iterates over the contents which include private keys and certificates.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Pfx, PrivateKey, Cert;

...

procedure TForm1.Button1Click(Sender: TObject);
var
pfx: HCkPfx;
success: Boolean;
numPrivateKeys: Integer;
privKey: HCkPrivateKey;
i: Integer;
cert: HCkCert;
numCerts: Integer;

begin
pfx := CkPfx_Create();

// Load the PKCS12 from a file
success := CkPfx_LoadPfxFile(pfx,'/someDir/my.p12','pfxFilePassword');
if (success <> True) then
  begin
    Memo1.Lines.Add(CkPfx__lastErrorText(pfx));
    Exit;
  end;

numPrivateKeys := CkPfx_getNumPrivateKeys(pfx);

Memo1.Lines.Add('Private Keys:');

i := 0;
while i < numPrivateKeys do
  begin
    privKey := CkPfx_GetPrivateKey(pfx,i);

    // Do something with the private key ...

    CkPrivateKey_Dispose(privKey);
    i := i + 1;
  end;

numCerts := CkPfx_getNumCerts(pfx);

Memo1.Lines.Add('Certs:');
i := 0;
while i < numCerts do
  begin
    cert := CkPfx_GetCert(pfx,i);
    Memo1.Lines.Add(CkCert__subjectDN(cert));

    // If the certificate has a private key (one of the private keys within the PFX)
    // then it can also be obtained via the certificate object:
    if (CkCert_HasPrivateKey(cert) = True) then
      begin

        Memo1.Lines.Add('Has private key!');

        privKey := CkCert_ExportPrivateKey(cert);
        // ...
        CkPrivateKey_Dispose(privKey);
      end;

    CkCert_Dispose(cert);
    i := i + 1;
  end;

CkPfx_Dispose(pfx);

end;